Refactor PluginPermissionHelper as WebViewPermissionHelper

content/public/browser/web_contents_user_data.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_
 
 #include "base/logging.h"
 #include "base/supports_user_data.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 
 namespace content {
 
 // A base class for classes attached to, and scoped to, the lifetime of a
 // WebContents. For example:
 //
 // --- in foo_tab_helper.h ---
 // class FooTabHelper : public content::WebContentsUserData<FooTabHelper> {
 //  public:
@@ skipping 22 matching lines @@
   // WebContents (via CreateForWebContents above) and returns it. If no instance
   // of the type was attached, returns NULL.
   static T* FromWebContents(WebContents* contents) {
     DCHECK(contents);
     return static_cast<T*>(contents->GetUserData(UserDataKey()));
   }
   static const T* FromWebContents(const WebContents* contents) {
     DCHECK(contents);
     return static_cast<const T*>(contents->GetUserData(UserDataKey()));
   }
+  static T* FromFrameID(int render_process_id, int render_frame_id) {

[Fady Samuel, 2014/06/20 22:54:33]

Don't modify this file.

[Xi Han, 2014/06/24 13:55:33]

Done.

+    content::RenderFrameHost* render_frame_host =
+        content::RenderFrameHost::FromID(render_process_id, render_frame_id);
+    if (!render_frame_host) {
+      return NULL;
+    }
+    content::WebContents* web_contents =
+        content::WebContents::FromRenderFrameHost(render_frame_host);
+    return FromWebContents(web_contents);
+  }
 
  protected:
   static inline void* UserDataKey() {
     return &kLocatorKey;
   }
 
  private:
   // The user data key.
   static int kLocatorKey;
 };
 
 // The macro to define the locator key. This key must be defined in the .cc file
 // of the tab helper otherwise different instances for different template types
 // will be collapsed by the Visual Studio linker.
 //
 // The "= 0" is surprising, but is required to effect a definition rather than
 // a declaration. Without it, this would be merely a declaration of a template
 // specialization. (C++98: 14.7.3.15; C++11: 14.7.3.13)
 //
 #define DEFINE_WEB_CONTENTS_USER_DATA_KEY(TYPE) \
 template<>                                      \
 int content::WebContentsUserData<TYPE>::kLocatorKey = 0
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_USER_DATA_H_